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The Larsen C ice shelf break has sparked groundbreaking research

Anticipation of one of the biggest rifts ever detected reached a fever pitch in summer 2017

WIDENING GULF A Delaware-sized iceberg calved when a crack in the Larsen C ice shelf reached the Weddell Sea this year. In this satellite image from September, rifts are visible in the ice and clouds cast a shadow on the new iceberg.

NASA Earth observatory, joshua stevens, Landsat data, USGS

In 2015, glaciologist Daniela Jansen reported that a large rift was rapidly growing across one of the Antarctic Peninsula’s ice shelves, known as Larsen C. When the shelf broke, she and colleagues predicted, it would be the largest calving event in decades.